Results 101 to 110 of about 14,230,885 (272)

Impact of Wetting–Drying Cycles on the Mechanical Properties and Microstructure of Wood Waste–Gypsum Composites [PDF]

, 2019
Large amounts of wood waste are generated each year in the world. In an attempt to identify a good recovery option for those residues, wood waste from construction and demolition works were used as raw materials in gypsum plasters.
Morales Conde, María Jesús, Pedreño-Rojas, M. Alejandro, Pérez Gálvez, Filomena, Rubio de Hita, Paloma   +3 more
core   +1 more source

A macro‐element strategy based upon spectral finite elements and mortar elements for transient wave propagation modeling. Application to ultrasonic testing of laminate composite materials

International Journal for Numerical Methods in Engineering, 2019
Proposing efficient numerical modeling tools for high‐frequency wave propagation in realistic configurations, such as the one appearing in ultrasonic testing experiments, is a major challenge, especially in the perspective of inversion loops or ...
A. Imperiale, E. Demaldent
semanticscholar   +1 more source

An Ultrasonic Pulse Compression System for Nondestructive Testing Using Complementary Series Phase Modulation [PDF]

, 1990
Shusou Wadaka, Tsutomu Nagatsuka, Koichiro Misu, Shuji Urasaki, Mitsuhiro Koike   +4 more
openalex   +1 more source

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

Technologies, 2019
Ultrasonic Testing (UT) is one of the most important technologies in Non-Detective Testing (NDT) methods. Recently, Barker code and Golay code pairs as coded excitation signals have been applied in ultrasound imaging system with improved quality. However,
Zeng Fan, J. Rudlin, Giorgos Asfis, Hongying Meng   +3 more
semanticscholar   +1 more source

Signal Separation in Ultrasonic Non-Destructive Testing

Acta Polytechnica, 2007
In ultrasonic non-destructive testing the signals characterizing the material structure are commonly evaluated. The sensitivity and resolution of ultrasonic systems is limited by the backscattering and electronic noise level commonly contained in the ...
V. Matz, M. Kreidl, R. Šmíd
doaj  

Input-output characterization of an ultrasonic testing system by digital signal analysis [PDF]

The input/output characteristics of an ultrasonic testing system used for stress wave factor measurements were studied. The fundamentals of digital signal processing are summarized.
Karaguelle, H., Lee, S. S., Williams, J., Jr.   +2 more
core   +1 more source

On the Specimen Design, Physical Properties and Geometry Effect on Heat Generation and Thermal Gradient in Ultrasonic Fatigue

Machines
Performing fatigue characterisation is often an expensive task, being both time consuming and expensive. Taking that into account, ultrasonic fatigue testing is an interesting solution, since it can be thousands of times faster than traditional ...
Felipe Klein Fiorentin, Rita Dantas, Jorge Wolfs Gil, Andrea Piga Carboni, Thiago Antonio Fiorentin, Abílio Manuel Pinho de Jesus   +5 more
doaj   +1 more source

Inverse Kinematic Analysis and Evaluation of a Robot for Nondestructive Testing Application

Journal of Robotics, 2015
The robot system has been utilized in the nondestructive testing field in recent years. However, only a few studies have focused on the application of ultrasonic testing for complex work pieces with the robot system. The inverse kinematics problem of the
Zongxing Lu, Chunguang Xu, Qinxue Pan, Xinyu Zhao, Xinliang Li   +4 more
doaj   +1 more source

Study on Ultrasonic Nondestructive Testing of Self-Compacting Concrete under Uniaxial Compression Test [PDF]

, 2022
Yongshuai Sun, Guihe Wang, Yixuan Li
openalex   +1 more source

Computer automation of ultrasonic testing [PDF]

Report describes a prototype computer-automated ultrasonic system developed for the inspection of weldments. This system can be operated in three modes: manual, automatic, and computer-controlled.
Dunmyer, D., Gardner, A. H., Kerlin, E. E., Kunselman, J. S., Robinson, A. R., Walker, T. C., Wells, T. G., Yee, B. G. W.   +7 more
core   +1 more source